低低跟踪重力卫星星间距离变率对区域质量异常敏感度分析  

Sensitivity Analysis of Low-Low Track Gravity Satellite Inter-Satellite Range Rate to Regional Mass Anomaly

作　　者：郭飞霄[1,2] 肖云[1,2] 汪菲菲 苗岳旺 

机构地区：[1]西安测绘研究所,西安市雁塔路中段1号710054 [2]地理信息工程国家重点实验室,西安市雁塔路中段1号710054 [3]西安测绘信息技术总站,西安市西影路36号710054

出　　处：《大地测量与地球动力学》2015年第5期861-865,共5页Journal of Geodesy and Geodynamics

基　　金：国家973计划(2013CB733303);国家自然科学基金(41374083);大地测量与地球动力学国家重点实验室开放基金(SKLGED2013-3-3-E)

摘　　要：推导了区域质量变化和球谐系数变化量之间的函数关系,根据该关系式可将不同区域质量异常对重力场变化的影响分离出来。设计仿真实验,分析时变重力场模型下星间距离变率相对稳态背景重力场模型下星间距离变率值的残差变化。结果表明,区域质量异常对星间距离变率的影响在空间分布上是有限的,但星间距离变率对区域质量异常具有很高的敏感性。High precision inter-satellite range rate is sensitive to mass anomaly in the Earth＇s surface region.The function of the relationship between regional mass anomaly and spherical harmonic coefficients variation is deduced.According to this relationship,the influence of mass anomaly in different regions on gravity can be separated.The influence is simulated by adding mass variation of a certain height of equivalent water and analyzing the range rate residual of time-variable gravity field relative to background gravity field.The result shows that the influence of regional mass anomaly on range rate is limited spatially,and that range rate is very sensitive,and that the sensitivity is related to the content of mass variation.

关 键 词：卫星跟踪卫星 卫星重力 星间距离变量 质量异常 Mascon方法 

分 类 号：P223[天文地球—大地测量学与测量工程]